Single Choice

Which of the following metals cannot be obtained by reduction of its metal oxide by aluminium?

A$$Cr$$
B$$Mn$$
C$$Fe$$
D$$Mg$$
Correct Answer

Solution

Magnesium metal is more reactive than Aluminium. So, it is not required by Aluminium through Thermite reaction $$K>Na>Ca>Mg>Al$$ (Reactivity order)

SIMILAR QUESTIONS

Metals and Non - metals

In metallurgical process, aluminium acts as:

Metals and Non - metals

Which of the following metals is obtained by electrolytic reduction process?

Metals and Non - metals

During extraction of aluminium from bauxite:

Metals and Non - metals

Answer the following: (a) Aluminium is a more active metal than iron, but suffers less corrosion. Why? (b) Explain and give reasons why aluminium vessels should not be cleaned with powders containing alkalis.

Metals and Non - metals

Why the food containing iron salts should not be cooked in aluminium utensils?

Metals and Non - metals

State on what special properties the use of each of these metals depends: (a) aluminium (b) zinc

Metals and Non - metals

How can a layer off aluminium oxide on an aluminium object be made thicker? What is this process called?

Metals and Non - metals

Aluminium reacts with caustic soda to form :

Metals and Non - metals

Aluminum has a great affinity for oxygen and its oxidation is an exothermic process. This fact is made use of in

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